5 in police custody over Bastia violence
Four men were arrested early in the day and a fifth later turned himself in at the police station and was also placed in custody.
A hardcore section of home fans at Bastia's Armand Cesari stadium targeted Lyon's players as they warmed up before the game on April 16, causing it to be delayed by more than 50 minutes, and then abandoned as the two sides went in for the break.
Two Lyon players Anthony Lopes and Mathieu Gorgelin have filed police complaints after being attacked by Bastia fans during the game.
Bastia's next home game against Rennes on April 29 will be played at a neutral ground with no fans allowed.
Other disciplinary measures against the club who are already bottom of Ligue 1 and facing relegation could follow on May 4.
The violence followed crowd trouble several days earlier at Lyon as they hosted Turkish team Besiktas in the Europa League quarter-finals.
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